/**
 ******************************************************************************
 * @file    lwipopts.h
 * @author  MCD Application Team
 * @version V1.1.0
 * @date    31-July-2013
 * @brief   lwIP Options Configuration.
 *          This file is based on Utilities\lwip_v1.4.1\src\include\lwip\opt.h
 *          and contains the lwIP configuration for the STM32F4x7 demonstration.
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
 *
 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
 * You may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *        http://www.st.com/software_license_agreement_liberty_v2
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 ******************************************************************************
 */

/**
 * This file modified by Tenkiv, Inc.
 * @since v1.0.0.0
 */

#ifndef __LWIPOPTS_H__
#define __LWIPOPTS_H__

#ifdef __cplusplus
extern "C" {
#endif

	/**
	 * SYS_LIGHTWEIGHT_PROT==1: if you want inter-task protection for certain
	 * critical regions during buffer allocation, deallocation and memory
	 * allocation and deallocation.
	 */
#define SYS_LIGHTWEIGHT_PROT    0

	/**
	 * NO_SYS==1: Provides VERY minimal functionality. Otherwise,
	 * use lwIP facilities.
	 */
#define NO_SYS                  1

	/**
	 * NO_SYS_NO_TIMERS==1: Drop support for sys_timeout when NO_SYS==1
	 * Mainly for compatibility to old versions.
	 */
#define NO_SYS_NO_TIMERS        1

	/* ---------- Memory options ---------- */
	/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which
	 lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2
	 byte alignment -> define MEM_ALIGNMENT to 2. */
#define MEM_ALIGNMENT           4

	/* MEM_SIZE: the size of the heap memory. If the application will send
	 a lot of data that needs to be copied, this should be set high. */
#define MEM_SIZE                (10*1024)

	/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application
	 sends a lot of data out of ROM (or other static memory), this
	 should be set high. */
#define MEMP_NUM_PBUF           100
	/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
	 per active UDP "connection". */
#define MEMP_NUM_UDP_PCB        6
	/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
	 connections. */
#define MEMP_NUM_TCP_PCB        10
	/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
	 connections. */
#define MEMP_NUM_TCP_PCB_LISTEN 6
	/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
	 segments. */
#define MEMP_NUM_TCP_SEG        12
	/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
	 timeouts. */
#define MEMP_NUM_SYS_TIMEOUT    10

	/* ---------- Pbuf options ---------- */
	/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
#define PBUF_POOL_SIZE          10

	/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#define PBUF_POOL_BUFSIZE       500

	/* ---------- TCP options ---------- */
#define LWIP_TCP                1
#define TCP_TTL                 255

	/* Controls if TCP should queue segments that arrive out of
	 order. Define to 0 if your device is low on memory. */
#define TCP_QUEUE_OOSEQ         0

	/* TCP Maximum segment size. */
#define TCP_MSS                 (1500 - 40)/* TCP_MSS = (Ethernet MTU - IP header size - TCP header size) */

	/* TCP sender buffer space (bytes). */
#define TCP_SND_BUF             (4*TCP_MSS)

	/*  TCP_SND_QUEUELEN: TCP sender buffer space (pbufs). This must be at least
	 as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work. */

#define TCP_SND_QUEUELEN        (2* TCP_SND_BUF/TCP_MSS)

	/* TCP receive window. */
#define TCP_WND                 (2*TCP_MSS)

	/* ---------- ICMP options ---------- */
#define LWIP_ICMP                       1

	/* ---------- DHCP options ---------- */
	/* Define LWIP_DHCP to 1 if you want DHCP configuration of
	 interfaces. DHCP is not implemented in lwIP 0.5.1, however, so
	 turning this on does currently not work. */
#define LWIP_DHCP               1

	/* ---------- UDP options ---------- */
#define LWIP_UDP                1
#define UDP_TTL                 255

	/* ---------- Statistics options ---------- */
#define LWIP_STATS 0
#define LWIP_PROVIDE_ERRNO 1

	/* ---------- link callback options ---------- */
	/* LWIP_NETIF_LINK_CALLBACK==1: Support a callback function from an interface
	 * whenever the link changes (i.e., link down)
	 */
#define LWIP_NETIF_LINK_CALLBACK        1

	/*
	 --------------------------------------
	 ---------- Checksum options ----------
	 --------------------------------------
	 */

	/*
	 The STM32F4x7 allows computing and verifying the IP, UDP, TCP and ICMP checksums by hardware:
	 - To use this feature let the following define uncommented.
	 - To disable it and process by CPU comment the  the checksum.
	 */
#define CHECKSUM_BY_HARDWARE 

#ifdef CHECKSUM_BY_HARDWARE
	/* CHECKSUM_GEN_IP==0: Generate checksums by hardware for outgoing IP packets.*/
#define CHECKSUM_GEN_IP                 0
	/* CHECKSUM_GEN_UDP==0: Generate checksums by hardware for outgoing UDP packets.*/
#define CHECKSUM_GEN_UDP                0
	/* CHECKSUM_GEN_TCP==0: Generate checksums by hardware for outgoing TCP packets.*/
#define CHECKSUM_GEN_TCP                0
	/* CHECKSUM_CHECK_IP==0: Check checksums by hardware for incoming IP packets.*/
#define CHECKSUM_CHECK_IP               0
	/* CHECKSUM_CHECK_UDP==0: Check checksums by hardware for incoming UDP packets.*/
#define CHECKSUM_CHECK_UDP              0
	/* CHECKSUM_CHECK_TCP==0: Check checksums by hardware for incoming TCP packets.*/
#define CHECKSUM_CHECK_TCP              0
	/* CHECKSUM_CHECK_ICMP==0: Check checksums by hardware for incoming ICMP packets.*/
#define CHECKSUM_GEN_ICMP               0
#else
	/* CHECKSUM_GEN_IP==1: Generate checksums in software for outgoing IP packets.*/
#define CHECKSUM_GEN_IP                 1
	/* CHECKSUM_GEN_UDP==1: Generate checksums in software for outgoing UDP packets.*/
#define CHECKSUM_GEN_UDP                1
	/* CHECKSUM_GEN_TCP==1: Generate checksums in software for outgoing TCP packets.*/
#define CHECKSUM_GEN_TCP                1
	/* CHECKSUM_CHECK_IP==1: Check checksums in software for incoming IP packets.*/
#define CHECKSUM_CHECK_IP               1
	/* CHECKSUM_CHECK_UDP==1: Check checksums in software for incoming UDP packets.*/
#define CHECKSUM_CHECK_UDP              1
	/* CHECKSUM_CHECK_TCP==1: Check checksums in software for incoming TCP packets.*/
#define CHECKSUM_CHECK_TCP              1
	/* CHECKSUM_CHECK_ICMP==1: Check checksums by hardware for incoming ICMP packets.*/
#define CHECKSUM_GEN_ICMP               1
#endif

	/*
	 ----------------------------------------------
	 ---------- Sequential layer options ----------
	 ----------------------------------------------
	 */
	/**
	 * LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c)
	 */
#define LWIP_NETCONN                    0

	/*
	 ------------------------------------
	 ---------- Socket options ----------
	 ------------------------------------
	 */
	/**
	 * LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)
	 */
#define LWIP_SOCKET                     0

	/*
	 ----------------------------------------
	 ---------- Lwip Debug options ----------
	 ----------------------------------------
	 */
	/* #define LWIP_DEBUG                      1 */

#ifdef __cplusplus
}
#endif

#endif /* __LWIPOPTS_H__ */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
